package org.example.springmvcdemo.controller;

import jakarta.servlet.http.HttpSession;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.SessionAttribute;

@RestController
@RequestMapping("/user")
public class UserController {
    @RequestMapping("/login")
    public Boolean login(String userName, String password, HttpSession session){
        //参数校验
       /* if(userName== null || userName.length() == 0 || password == null ||
        password.length()==0){
            return false;
        }*/
        if(!StringUtils.hasLength(userName)||!StringUtils.hasLength(password)){
            return false;
        }
        //判断密码是否正确
        //如果userName为null汇报空指针异常
        //上面已经进行了判空的处理 userName不会为null
        //这是一种习惯 常量字符串 写在前面 变量参数写在后面
        if("admin".equals(userName) && "admin".equals(password)){
            //设置session
            //直接在参数列表设置
            session.setAttribute("userName", userName);
            return true;
        }
        return false;
    }
    @RequestMapping("/index")
    public String getUserName(@SessionAttribute("userName") String userName){
        return userName;

    }
}
